The invention discloses an integrated high-efficient water-source heat pump unit. The integrated high-efficient water-source heat pump unit comprises a refrigeration circulating system with a compressor, wherein the refrigeration circulating system also comprises an oil separator, a water-source-side heat exchanger, an expansion throttling device and an application-side heat exchanger, which are serially connected with the compressor, a freezing water circulating device is arranged between an inlet and an outlet of the application-side heat exchanger, and a cooling water circulating device is arranged between an inlet and an outlet of the water-source-side heat exchanger. After the optimization, both the freezing water circulating device and the cooling water circulating device respectively comprise a water filter, an electronic scale remover and an online rubber ball washing device. The integrated high-efficient water-source heat pump unit has the advantages that 1, the integration degree is high, so that the structure is compact, the occupied area is small, and convenience in installation, high efficiency and energy conservation can be realized; 2, the heat exchangers can be washed without stopping the machine, so that the use is convenient.